Pls be warned that I don't use peptides from this seller. I don't think this @amos jamieson anneq can be trusted I only get GHK CU from Body Mechanic Active Therapy GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Same GHK Cu. Better way. Same GHK Cu copper peptide complex. Completely different experience. If you've been eyeing the pen, put it down. We made something better, and your skin barrier will thank you GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect